CN103994044A - Crank connecting rod transmission type hydraulic pump with linear motor - Google Patents
Crank connecting rod transmission type hydraulic pump with linear motor Download PDFInfo
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- CN103994044A CN103994044A CN201410202456.6A CN201410202456A CN103994044A CN 103994044 A CN103994044 A CN 103994044A CN 201410202456 A CN201410202456 A CN 201410202456A CN 103994044 A CN103994044 A CN 103994044A
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Abstract
The invention discloses a crank connecting rod transmission type hydraulic pump with a linear motor. The crank connecting rod transmission type hydraulic pump comprises at least one plunger piston which is movably arranged in a cavity. The crank connecting rod transmission type hydraulic pump is characterized by further comprising the linear motor, at least one rack is arranged on the motor secondary level of the linear motor, and at least one gear is meshed with the rack; the plunger piston is connected to the eccentric position of the gear through a hinged rod, and the hinged rod is hinged to the gear and the plunger piston. According to the crank connecting rod transmission type hydraulic pump with the linear motor, a crank connecting rod mechanism is fully utilized, when the transmission angle and the pressure angle are large, the crank connecting rod mechanism is a stroke amplifying mechanism, and the hydraulic pump can output low-pressure and high-flow liquid, and when the transmission angle and the pressure angle are small, the crank connecting rod mechanism is a force amplifying mechanism, and the hydraulic pump can output high-pressure and small-flow liquid.
Description
Technical field
The invention belongs to mechanical field, relate to a kind of crank-connecting rod transmission type hydraulic press pump that adopts linear electric motor, in particular for the pluger type hydraulic pump of hudraulic lift drive system.
Background technique
At present, in the Metering Flow Control Circuits Hydraulic Adjustable Speed technology of industrial field extensive use, mainly contain two kinds of the Metering Flow Control Circuits that metering pump and throttle valve form and the pump speed control system being driven by variable displacement pump.Powerful, flow and the continuously adjustable oil hydraulic pump of pressure are mainly cam-type axial piston pumps, but the structure of cam-type axial piston pump is very complicated, particularly plunger will bear the moment being formed by radial force, thereby its friction condition is worsened, and working life and mechanical efficiency reduce.In addition, be connected in the piston shoes complex structure of plunger lower end, friction condition is extremely severe, adds complicated flow system etc., makes the manufacturing process of plunger pump extremely complicated.Traditional cam-type axial piston pump also has a critical defect can not be ignored, it is instability of flow, produce so-called pulsation rate, as wish reduces flow pulse rate, not only need to increase the number of plunger, and the number that needs plunger is prime number, for example 3,5,7,11,13,17,19,23 etc.Therefore, the plunger of excessive number is actual is a kind of helpless selection, not only cause mechanism complicated, and manufacture cost is high.At present, extremely low in the energy utilization rate of the Metering Flow Control Circuits of industrial field extensive use, be only applicable to the occasion of small-power transmission, the occasion of, continuous speed adjustment high-power at needs, the pump speed control system that often adopts variable displacement pump to drive.And powerful, flow and the continuously adjustable oil hydraulic pump of pressure are mainly cam-type axial piston pumps, former high-quality cam-type axial piston pump mainly depends on import, is mainly the product of German BOSCH-REXROTH and Kawasaki, Japan company, and price is extremely expensive.Cam-type axial piston pump with engineering machinery regular size is given an example, and separate unit price is generally more than 30,000 yuans.Recently, Shandong Zhong Chuan hydraulic pressure has successfully been produced high-quality oil hydraulic pump that can substituting import one, and separate unit price is also 20,000 yuans of left and right.So fancy price has caused enormous pressure to downstream industry.
The notice of authorization number double-action plunger pump that a kind of symmetrical toggle link drives for the Chinese patent of CN 102207066 B also discloses, but this double-action plunger pump has only represented afterbody mechanical transmission, if the reducing gear of front end and drive motor in increase, will find that the integral layout of this double-action plunger pump is very asymmetric.In addition, the elbow-bar mechanism in this double-action plunger pump is to be hinged on the eccentric pin shaft of gear face, and this bearing pin is overhang, force-bearing situation extreme difference.
Linear motor is one of New-type electric machine of Recent study development, is a kind of electric energy to be directly changed into straight-line power plant.Linear electric motor have advantages of many outstanding, and as good, easy to maintenance, simple in structure in starting performance etc., in some occasion, linear electric motor have the application of its uniqueness, are that electric rotating machine institute is irreplaceable.Linear electric motor are especially applicable to being applied to needs type frequently reciprocating, have suitable thrust, the occasion of suitable movement velocity and suitable positioning precision.
Summary of the invention
In order to address the above problem, the invention provides a kind of simple in structure, with low cost, can continuously adjusting flow rate and the crank-connecting rod transmission type hydraulic press pump of the employing linear electric motor of pressure.
Technological scheme of the present invention is to provide a kind of crank-connecting rod transmission type hydraulic press pump that adopts linear electric motor, it comprises two plungers, described plunger is movably set in a cavity volume, it is characterized in that: also comprise linear electric motor, be provided with two tooth bars in the motor secondary of described linear electric motor; Take described motor secondary as symmetry axis, in the bilateral symmetry of described motor secondary, two gears be set, described in two gear respectively with tooth bar engagement described in; Described plunger all by a toggle, be connected to one described in gear eccentric position place, described toggle and described gear and plunger are all hinged.
Preferably, the end of described cavity volume is equipped with in-line and oil extraction road; Described in-line communicates with fuel tank by one-way valve, and described oil extraction road joins by one-way valve and external hydraulic system.
Preferably, the outlet of the one-way valve on described oil extraction road communicates with voltage stabilizer, and hydraulic executing system is led in the outlet of voltage stabilizer.
Preferably, on described voltage stabilizer, be connected to digital pressure switch.
Preferably, described in two, the mover of servo linear motor is controlled by two-axle interlocking numerical control system.
The crank-connecting rod transmission type hydraulic press pump of employing linear electric motor of the present invention has the following advantages:
1) in mechanism, the geometrical shape of each basic structure is fairly simple, manufactures conveniently.
2) adopt linear electric motor to drive, do not need the be in line additional device of motion of rotation motion, with respect to the device being driven by common AC motor, whole system weight and volume declines, and noise is also lower simultaneously, and efficiency is high, free from environmental pollution, be a kind of device of greenization.
3) adopt linear electric motor greatly to improve automation and the equipment of device, service behaviour has obtained improving greatly, is the developing direction of equipment of new generation.
4) connecting rod in this device is non-linear mechanism, connecting rod transmission angle and pressure angle large in, be stroke amplifying mechanism, the exportable low pressure and mass flow liquid of oil hydraulic pump now; Transmission angle and pressure angle little in, connecting rod is force amplificatory structure, now the exportable high-pressure low-flow liquid of oil hydraulic pump.
5) adopt duplex position structure, stress balance, effectively extending structure life-span.。
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention adopts the crank-connecting rod transmission type hydraulic press pump most preferred embodiment of linear electric motor.
Embodiment
Below the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor of the present invention comprises two linear electric motor 10, and these linear electric motor 10 comprise motor secondary 12 and the electric motor primary 14 of rod.In motor secondary 12, be connected a two-sided rack 16(or directly in motor secondary 12, process the two-sided rack 16), both sides respectively arrange one with tooth bar 16 meshed gears 18 and gear 18 '.Certainly, those of ordinary skills can be according to thinking of the present invention, the tooth bar 16 that is easy to expect be connected in motor secondary 12, in the same side of tooth bar 16, arrange several gears 18 and gear 18 '; Or two independent tooth bars 16 are set in motor secondary 12 both sides, along tooth bar 16 directions arrange a plurality of gears 18 and gear 18 ' etc. mode, equally also can realize the function of oil hydraulic pump.′
The both sides of motor secondary 12 respectively arrange a left plunger 20 and right plunger 20 '.Left plunger 20 and right plunger 20 ' be placed in ordinatedly cavity volume separately; The end of left and right two cavity volumes (being the cavity volume of left plunger 20 and right plunger 20 ' correspondence, lower same) is provided with into oil extraction road (not shown); In-line (not shown) communicates with fuel tank (not shown) by one-way valve (not shown), and oil extraction road (not shown) joins by one-way valve and external hydraulic system (not shown).The outlet of the one-way valve on oil extraction road (not shown) communicates with voltage stabilizer (not shown), and hydraulic executing system (not shown) is led in the outlet of voltage stabilizer; On voltage stabilizer, be connected to digital pressure switch (not shown).Entering oil extraction road, one-way valve, fuel tank, voltage stabilizer, digital pressure switch and hydraulic executing system is the structure that industry is known and extensively adopted, and non-innovative point of the present invention place.
Left plunger 20 and right plunger 20 ' by toggle 22 and toggle 22 ', be hinged on gear 18 and gear 18 ' and the position of gear 18 and gear 18 ' bias on.
Linear electric motor 10 drive motor secondary 12 move up or down, thereby the tooth bar 16 being fixed in motor secondary 12 also can corresponding symmetric motion.
When tooth bar 16 moves downward, can drive two side gears 18 and gear 18 ' and gear 18 and gear 18 ' do respectively clockwise and motion counterclockwise, drive crank-connecting rod 22 and the toggle 22 ' mechanism of both sides, drive left plunger 20 and right plunger 20 ' while symmetric motion to the inside, at this moment, the volume of left and right two cavity volumes expands, form negative pressure, hydraulic oil in fuel tank, under atmospheric effect, is opened one-way valve below, enter respectively left plunger 20 and right plunger 20 ' cavity volume in.
When tooth bar 16 moves upward, can drive two side gears 18 and gear 18 ' and gear 18 and gear 18 ' do respectively counterclockwise and motion clockwise, the crank-connecting rod 22 and the toggle 22 ' mechanism that drive both sides, drive left plunger 20 and right plunger 20 ' while symmetric motion to the inside.At this moment, the volume of the cavity volume of left plunger 20 and right plunger 20 ' correspondence dwindles, and to fluid mineralization pressure, makes to lead to the closed check valve of fuel tank below, and while one-way valve opens above realizes pressure oil output.
Above embodiment is only the present invention's a kind of mode of execution wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (5)
1. a crank-connecting rod transmission type hydraulic press pump that adopts linear electric motor, it comprises two plungers, described plunger is movably set in a cavity volume, it is characterized in that: also comprise linear electric motor, be provided with two tooth bars in the motor secondary of described linear electric motor; Take described motor secondary as symmetry axis, in the bilateral symmetry of described motor secondary, two gears be set, described in two gear respectively with tooth bar engagement described in; Described plunger all by a toggle, be connected to one described in gear eccentric position place, described toggle and described gear and plunger are all hinged.
2. the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor according to claim 1, is characterized in that: the end of described cavity volume is equipped with in-line and oil extraction road; Described in-line communicates with fuel tank by one-way valve, and described oil extraction road joins by one-way valve and external hydraulic system.
3. the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor according to claim 2, is characterized in that: the outlet of the one-way valve on described oil extraction road communicates with voltage stabilizer, and hydraulic executing system is led in the outlet of voltage stabilizer.
4. the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor according to claim 3, is characterized in that: on described voltage stabilizer, be connected to digital pressure switch.
5. the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor according to claim 4, is characterized in that: described in two, the mover of servo linear motor is controlled by two-axle interlocking numerical control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410202456.6A CN103994044A (en) | 2014-05-14 | 2014-05-14 | Crank connecting rod transmission type hydraulic pump with linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410202456.6A CN103994044A (en) | 2014-05-14 | 2014-05-14 | Crank connecting rod transmission type hydraulic pump with linear motor |
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| Publication Number | Publication Date |
|---|---|
| CN103994044A true CN103994044A (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410202456.6A Pending CN103994044A (en) | 2014-05-14 | 2014-05-14 | Crank connecting rod transmission type hydraulic pump with linear motor |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317645A (en) * | 2015-06-12 | 2016-02-10 | 重庆大学 | Opposite end-face type valve-controlled axial plunger pump |
| CN107327382A (en) * | 2016-04-29 | 2017-11-07 | 殷图源 | A kind of Novel plunger pump |
| CN108787554A (en) * | 2017-05-04 | 2018-11-13 | 苏州宝时得电动工具有限公司 | Handheld high-voltage cleaning machine |
| WO2020248573A1 (en) * | 2019-06-12 | 2020-12-17 | 深圳市亚辉龙生物科技股份有限公司 | Liquid dispensing pump, and liquid dispensing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040265155A1 (en) * | 2003-06-25 | 2004-12-30 | Hunter Timothy H. | Transmissionless variable output pumping unit |
| CN101672260A (en) * | 2009-09-23 | 2010-03-17 | 西南石油大学 | Linear motor multi-cylinder reciprocating pump with coupled gear and rack |
| CN102207066A (en) * | 2011-07-04 | 2011-10-05 | 苏州大学 | Double-acting plunger pump |
| WO2013013892A1 (en) * | 2011-07-27 | 2013-01-31 | Aptar Radolfzell Gmbh | Discharge device for media |
| CN103498902A (en) * | 2013-10-18 | 2014-01-08 | 苏州大学 | Electric double hand rubbing bionic device |
| CN204041378U (en) * | 2014-05-14 | 2014-12-24 | 苏州农业职业技术学院 | Adopt the crank-connecting rod transmission type hydraulic press pump of linear electric motor |
-
2014
- 2014-05-14 CN CN201410202456.6A patent/CN103994044A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040265155A1 (en) * | 2003-06-25 | 2004-12-30 | Hunter Timothy H. | Transmissionless variable output pumping unit |
| CN101672260A (en) * | 2009-09-23 | 2010-03-17 | 西南石油大学 | Linear motor multi-cylinder reciprocating pump with coupled gear and rack |
| CN102207066A (en) * | 2011-07-04 | 2011-10-05 | 苏州大学 | Double-acting plunger pump |
| WO2013013892A1 (en) * | 2011-07-27 | 2013-01-31 | Aptar Radolfzell Gmbh | Discharge device for media |
| CN103498902A (en) * | 2013-10-18 | 2014-01-08 | 苏州大学 | Electric double hand rubbing bionic device |
| CN204041378U (en) * | 2014-05-14 | 2014-12-24 | 苏州农业职业技术学院 | Adopt the crank-connecting rod transmission type hydraulic press pump of linear electric motor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317645A (en) * | 2015-06-12 | 2016-02-10 | 重庆大学 | Opposite end-face type valve-controlled axial plunger pump |
| CN105317645B (en) * | 2015-06-12 | 2017-09-05 | 重庆大学 | Opposed end-surface type Flat valve axial plunger pump |
| CN107327382A (en) * | 2016-04-29 | 2017-11-07 | 殷图源 | A kind of Novel plunger pump |
| CN108787554A (en) * | 2017-05-04 | 2018-11-13 | 苏州宝时得电动工具有限公司 | Handheld high-voltage cleaning machine |
| CN108787554B (en) * | 2017-05-04 | 2024-01-05 | 苏州宝时得电动工具有限公司 | Hand-held high-pressure cleaning machine |
| WO2020248573A1 (en) * | 2019-06-12 | 2020-12-17 | 深圳市亚辉龙生物科技股份有限公司 | Liquid dispensing pump, and liquid dispensing device |
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Application publication date: 20140820 |